I listen to A LOT of reggae too, although a lot of dub stuff lately. Another huge vote for 90.3 KEXP. Go to kexp.org and click the "On Demand" link at the top of the page. From there, choose "Streaming Archive" and search by genre or show name. "Positive Vibrations" is an exceptional reggae show.

For those that love Bob and want to know what he would sound like if he made an album last year, check out the Stephen Marley album "Mind Control". His voice is as close to Bob's as you'll find and he makes socially conscious music. If you want more of the energetic dancehall vibe, check out the Damian Marley stuff or another fairly recent release, Collie Buddz debut album.